what do the different types of insignias represent on US civil defense helmets from WWII?
367719
Wow that is a great question...I can tell you one that is still being used. The red 3 bladed prop in a white triangle in a red circle is used by the Civil Air Patrol. Back in WW2 they were under the office of Civil Defense, They still use they symbol. HA! I fond it..check link below
491183
The online version of AR 670-1 does not have it listed.\n\nHowever, from looking around, the CAB is categorized as a Group 1 badge.  Hopefully that helps a little.\n\nI watched a ceremony video...you get to see them place it in this...not sure how clear it is but here you go: \nhttp://www.army.mil/symbols/combatbadges/Action.html?story_id_key=7285
465935
THE CADUCEUS SYMBOL\nhttp://en.wikipedia.org/wiki/Caduceus
291336
Many of the pins represent awards and honors that they've received. Other pins/patches are simply identifying them as a soldier and showing their rank.
72689
I believe you have mistaken the Marine Corps emblem for another, possibly the Presidential seal, which has had some changes.  \nThe original USMC emblem did not have have a banner in its beak, it only consisted of the eagle, globe and foul anchor.  The traditional Marine Corps emblem - eagle, globe and foul anchor - forms the basic device of the Seal. Of these three, the eagle and the foul anchor are the most venerable, dating from 1800 when they first appeared on the Marine uniform button - a button which has remained to this day virtually unchanged from its original form. Influenced strongly by the design of the emblem of the British Royal Marines depicting as their domain the Eastern hemisphere, the U.S. Marines adopted in 1868 as their emblem a globe showing the Western hemisphere. To this was added the spread eagle and foul anchor from the button. Twelve years later the motto, "Semper Fidelis," completed the design.  The scarlet and gold surrounding the emblem are the official Marine Corps colors. These in turn are enclosed by Navy blue and gold signifying the Marine Corps as an integral part of the naval team.\nSemper Fi-
266591
If memory serves me correctly, they're a US penny with Lincoln on them.  They're silver looking because copper was too valuable during the war effort and were made out of a low grade steel.  Fairly rare now, but only worth anything if they're of "mint" quality.
991754
There are three branches of Starfleet.\n\nRed (or burgundy) signifies Command\n\nYellow signifies Engineering\n\nBlue signifies Sciences and Medical\n\nThe pips designate a person's rank\n\nThe black pips are just a sign of a "mediate" rank\nFor example:\n\ntwo gold pips and one black indicate a lieutenant commander\nwhere three gold pips is a full commander\n\nHope I've helped you a bit\n\nNOTE:  the color designations apply to TNG\nThe original series had command wearing yellow and engineering/security wearing red.
860969
Facing the flags. The American Flag in the center and higher. The Army and Navy on either side next since they are the two oldest branches. Next to the Navy the Marine Corps Flag since it was at one time a part of the Navy. Next to the Army, the Air Force Flag since it was at one time part of the Army. Then on the out side the Coast Guard on one side and the Merchant Marines on the other side..
34899
The Steelers logo was introduced in 1962, and is based on the old U.S. Steel logo. It consists of the word "Steelers" surrounded by three astroids (hypocycloids of four cusps). The yellow hypocycloid represents coal, the red one is for ore, and the blue one represents steel scrap.\n\nThe team's colors are black and gold, with their helmet being solid black with a gold central stripe and small white uniform numbers on the forehead. The Steelers are the only NFL team that puts their logo on only one side of the helmet (the right side). At first, it was a test to see how the logo appeared on their helmets, but its popularity led the team to leave it that way permanently.
34228
http://www.rangerjoes.com/army-rankinsignia-enlisted-spec-male-dress-green-p-957.html\nyour father's may have had a "T" in the middle in place of the eagle\n\nor like this\nhttp://www.robert-mcdonald.com/rank/ram-rank-tech4.html \n\nthe lightning strawberry patch is the 25th infantry tropic lightning patch\nhttp://www.rangerjoes.com/advanced_search_result.php?keywords=25th+infantry+division+patch&x=21&y=12\n\nYour local Veterans administration can point you in the right direction to get military service records.\n\nlet me know what else you need to know
885375
A simple web search revealed:\nhttp://tennessee.gov/sos/symbols/timeline.htm
491982
The military does not get any money from you buying a USMC knock nack no mater where you buy it.  The globe and anchor is not trademarked (that I know of I could be wrong) but I am quite sure that there is no licensing of this symbol out so anywhere you find it will be good.\n\nThere is no such thing as a knock off in this category (or if you prefer they are all knock offs if they are not on the uniform).
264934
On 15 March 1952, the Air Force and Navy released Air Force-Navy Aeronautical (ANA) Bulletin 420, defining the Type Designation System for Aeronautical Equipment. The system used arbitrary two-letter codes and a model number. The first letter was always an M (indicating Military Aeronautical Equipment). Examples for designations are "MA-3 Fire Control System" and "MB-2 Aircraft Towing Tractor". The below link will get you started into the mil-specs related to designations. \nJust scratching the surface:\nM - Military Equipment\nJ - Munitions <carrier>\n1 - First series
390138
1.  identification tag for soldiers: a metal identification tag for a member of the military, worn on a chain around the neck (informal)  \n2.  identification disk for dog: a metal disk, attached to a dog's collar, that gives the name and address of the dog's owner and often the name of the dog
468126
Purple hearts are a symbol of veterans, the bald eagle is a sign of bravery, it is also the USA's national bird.
949584
Depending on the design…The Red patch with white star = Worn from: 26 January 1927 - 10 January 1945. \nBoth the six-pointed star and the hexagonal shape of the patch refer to the unit's designation. The colors red and white represent the distinguishing flags for field armies.\nThen there was a white star trimmed in red with an A in the middle =Worn from: 10 January 1945 - 1957. \nThe Sixth United States Army was activated in January 1943 at Fort Sam Houston, Texas. Among other heroic feats, it is credited with the liberation of Manila at a cost of over thirty- seven thousand casualties. The six-pointed star refers to the number six, and the red letter "A" signifies army.\nCampaigns: World War II (New Guinea, Bismarck Archipelago, Leyte, Luzon).\nDecorations: Meritorious Unit Commendation (streamer embroidered Pacific Theater), Philippine Presidential Unit Citation (streamer embroidered 17 October 1944 to July 1945.\nHope this helps!
927607
I would guess around 1920 or something...or atleast thats probably when they stopped using leather helmets...im not sure about the plastics though.