With the information that Taylor provided, I spent some time Googling for answers.
What I think I discovered is that this one photo is from a bunch by a photographer only known as "Taylor"
. This appears to be the far left of Fox Green beach near the F-1 exit at Colleville and probably nearly underneath WN-60. Some of the photos by Taylor are marked as 3rd BN 16th Infantry. There's another photo from the same set that shows LCI-83 beaching. This happened at about 1130 hrs 6 June near the F-1 draw. LCI-83 hit a teller mine as it beached then discharged Co B 20th Engineers on the beach. According to some reports on the web, elements of the 116th Infantry, 29th Division, mistakenly landed on Fox Green beach. I don't have access to my 29th Division info, but maybe Johan or someone else has information regarding the 116th Infantry on Fox Green.
As for whether the vests were issued or acquired, certainly some vests were acquired. The dislike of the vests by the infantry has been well documented. .... But I also found this from the 16th Infantry Medical Detachment History.
Source: 16th Infantry Medical Detachment History
In April, 6 sand bags per vehicle were issued to the Detachment, also special waterproofed units containing medical supplies, with instructions on how they were to be stored and not used. In May, waterproofing material for vehicles was issued. Instructions were received to sand-bag the vehicles and on 16 May 1944, all jeeps and trailers were “combat loaded”. On May 17th, the Detachment made a permanent change of station and moved to Marshalling Area D-10 in the vicinity of Martinstown, Dorset, England. At D-10 assault gas masks were issued in place of the lightweight gas mask; all money over ten shillings was turned into the Camp Finance Officer for conversion to invasion money. All medical kits were waterproofed and complete gas-impregnated clothing was issued, also 50 assault jackets. At 0001 hrs, 25 May 1944, the camp was “sealed in”. No one was allowed to enter or leave. On May 26th all Officers and Enlisted Men were “briefed” and told what was going to happen. Assault landing of Normandy, France, in the vicinity of Colleville-Sur-Mer, spearheaded by the 16th Infantry! The Camp Finance Officer returned the money that was turned in for conversion—French Francs.
I was trying to figure out what time the BN and Regt Aid Stations moved inland, but I gave up for tonight.
I would agree that the wooden box appears to contain dressings or something of a medical nature. Whether that was its intended use or an opportunity is unclear. I would also comment that the M1 carbine at number 6 appears to actually be an M1A1 folding stock - you can barely make out the wire stock under the medic's arm. I also noticed what looks like the numbers '49' to the right of the medic's face. Haven't spent any time really looking into that yet, but Company I 16th Infantry was apparantly landed further east than Fox Green and that might be one of their transports.
I'm not quite sure what to make of the two guys in HBTs. 4th Division mainly wore HBTs over woolen, but definitely not the right spot on the beach. The guy in HBTs that is looking down appears to have a dark square painted on the side of the helmet. Can't tell if that is a flaw in the photo though. The HBT guy facing the cliff maybe fumbling with a Hagerson pack. My guess would be the two HBT guys are probably combat engineers - either from the ESB or an attached battalion.