First off, the 100% on topic things. Unfortunately my scanner has pretty poor resolution so most of these are fuzzy and a lot of detail visible in person is lost. They're from two scanned yard longs I have of Co. K, 133rd Infantry, Iowa National Guard, from Le Mars, IA at summer camp in Minnesota. It's entirely possible that these men were some of the 20 officers and 202 men from the 133rd Infantry that were called out in 1933 to deal with civil unrest in Plymouth County resulting from activities of the Farmers' Holiday Association.
The more sepia toned ones were taken in 1937 and the black/white in 1940.
Company guidon, and a few guys who didn't get the memo about not standing in the background, both wearing cartridge belts.
Company cook at left, and a Company Supply Sergeant at the right next to a Corporal with a whistle on his pocket. Two officers up front have their M1921 officer's belts worn Sam Browne style and three worn with suspenders rigged for field wear.
Tent is stamped "IOWA" over "NG" in the circle. Two cooks this time, plus the two men in shirts and colored overseas caps. Left has a readable "MINN." on it and the right "CAMP". I'd thought they might be American Legion initially but they may just be some sort of unit gear.
Other end of the photo; you can see whistle chains on the First Sergeant, Sergeant far right, fourth from right, and sixth from right.
Title, and a cameo from the photographer.
Next, things I'm not sure but are on the same theme, i.e. group photos, and have some interesting features.
NCOs from Co. D, 103rd Infantry of the Maine National Guard in 1927. Front row L to R is a Sergeant and three Corporals, back row appears to be all Corporals, all with their sidearms.
Howitzer platoon of Co. H, 103rd Infantry, Lewiston, ME in 1939 posed around their M1916 37mm guns on wheeled carriages for transport.