Alright this occurred to me while reading "Doughboys in Camoflouge". Basically assuming the US Army had at the start of the war gotten a pretty signifigant budget increase and increase in troop strength from roughly 100K (some sources I find say 98K some say 130K) backed by 27K NG men into at least nominally a 300K active duty army backed by 200K National Guardsmen. The US does not actually get involved in the war till 1916/1917 but their is fear that the US might be attacked by one of the participants and that causes enough political pressure for the Army and Navy to be expanded, reformed, and given better financing. I know this is all politically very unlikely in the US of the time but let's play the ball so to speak.
So basically how can you ideally arm and equip the US army with the technology available at the time. Weapons or equipment can be signifigant improved or weapons that in OTL wouldn't be developed/deployed for decades can be invented and introduced as long as the tech exists for it at the time (for example Goddard created a proto Bazooka type shoulder fired rocket launcher in 1918 but the war ended).
So basically how can you ideally arm and equip the US army with the technology available at the time. Weapons or equipment can be signifigant improved or weapons that in OTL wouldn't be developed/deployed for decades can be invented and introduced as long as the tech exists for it at the time (for example Goddard created a proto Bazooka type shoulder fired rocket launcher in 1918 but the war ended).