Tono Will unit big patch is for inshore undersea warfare group 11, don't understand the 3 ther.e 11-3, and is it an active unit or reserve.

C5F is possibly the US Navy abbreviation for the United States 5th Fleet which I think is based in the Persian Gulf and Arabian Sea but I have no other information about what it might be.

Found the below on Google. 

There was a 2nd Lt Leroy F. Gerard serving as the adjutant for the 5th Bn 164th DB during Nov 1918 at Camp Funston, KS; not  sure if it’s the former owner of your uniform, as this man was infantry, at least during this  time.   Source: FOLD3   Also found this on Ancestry: Looks like he was enlisted, then an officer. Again, not sure if it’s the same officer as per the uniform.

I thought the same thing, but the 1st seemed odd. Could it be 1st place at a Rod & Gun event?

Correction. I got the light right and I belIeve it is "63A" above the "S".

I admittedly don't have any yet as most of my knowledge has come from online research and forums/discussions. I appreciate your advice and am already finding places to get the resources you suggested. Thanks!

thank you all who are in favor and have opposition toward the bag. I appreciate all the comments on whether real or not, having a good discussion is always great. I have faith in the item personally. For all the reasons explained above I believe it is good. especially with him being attached to this unit so late in the war to me that explains the clear paint. it sitting in a garage (in California, so mostly dry) for years on end and being covered in a fairly nice and non volatile climate. and not really being touched it makes it solid for me. there's definetly wear on it, it's just not beat to a pulp. it probably wasn't used for long and mostly stored and not being carried from place to place. definetly some good points made, but with it being divided It is a little dissapointing everyones so divided. either way, thanks all for the input. 

Hi everyone! Im looking for some help to identify this patch, any details are helpful. Thank you!

Sold to me as a “theater made” knife.  The build quality is better than a lot of factory made mil knives of the period…