assorted US shoulder patches

[KatManDude]

just picked these up today at an estate sale for $2 each....was wondering what era they are, I think some are WW2 but some are likely post war....also, I have not seen that cloth backing before on some of the other patches I have already...

any input is greatly appreciated...

the sets are identified as (counter-clockwise) Ryukyu, Army Anti-aircraft, 104th Infantry division, 5th Army North....the singles are 7th engineer and 2nd Infantry

[Rakkasan187]

The 104th and 5th Army look to be WW2 era. The Ryukyus Command and AA Command are post WW2, 50s era. It appears these may have been on a patch blanket or something similar given the same backing material is on the patches..

Smitty