From: Georgetown, Texas, USA
For anyone interested in such things, there is an excellent post in another forum at:
Here is the meat of it:
U.S. = U.S. Army, including Philippine Scouts; P.A. = Philippine Army
M1916 37mm infantry gun: ON HAND 56 U.S., 9 P.A.; REQUIRED 26 U.S., 9 P.A.; EXCESS 30 guns in U.S. inventory
M3 37mm antitank gun: ON HAND 9 U.S.; 0 P.A.; REQUIRED 164 U.S., 617 P.A.; SHORTAGE 155 U.S., 617 P.A.
M1A2 37mm antiaircraft gun: ON HAND 66 U.S.; 0 P.A.; REQUIRED 96 U.S., 144 P.A.; SHORTAGE 30 U.S.; 66 P.A. [likely a typo, when 144 P.A. meant]
M1917 & M1917A1 (NOT broken down) 75mm field gun: ON HAND 134 U.S., 40 P.A.; REQUIRED 174 U.S., 360 P.A.; SHORTAGE 40 U.S., 320 P.A.
M1897A- 75mm antitank gun on half-track (then termed self-propelled mount or SPM): ON HAND 50 U.S., 0 P.A.; REQUIRED 50 U.S., 0 P.A.; REQUIREMENTS MET.
M1A1 75mm pack howitzer: ON HAND 0 U.S., 0 P.A.; REQUIRED 19 U.S., 0 P.A.; SHORTAGE 19 U.S., 0 P.A.
Vickers-Maxim 2.95-inch mountain GUN: ON HAND 12 U.S., 56 P.A.; REQUIRED 0 U.S., 0 P.A.; EXCESS 12 U.S., 56 P.A. [ironically and sadly the guns the U.S. and P.A. forces largely DID fight with]
M3 3-inch antiaircraft gun: ON HAND 62 U.S., 0 P.A.; REQUIRED 70 U.S., 92 P.A.; SHORTAGE 8 U.S., 92 P.A. [Nota bene: the shortage was intended to be largely filled with the new M1 90mm antiaircraft gun, a shipment never sent.]
M2 105mm field howitzer: ON HAND 0 U.S., 0 P.A.; REQUIRED 48 U.S., 72 P.A.; SHORTAGE 48 U.S., 72 P.A.
M1917/M1918 155mm field howitzer, high-speeded: ON HAND 2 U.S., 0 P.A.; REQUIRED 34 U.S., 48 P.A.; SHORTAGE 32 U.S., 48 P.A.
M1917/M1918 155mm field gun: ON HAND 42 U.S., 24 P.A.; REQUIRED 55 U.S., 36 P.A.; SHORTAGE 13 U.S., 12 P.A. [Nota bene: it appears that all or most of the shortage was intended to be filled with the new M1 155mm field and coast gun.]
M3 light tank (37mm gun): ON HAND 109 U.S., 0 P.A.; REQUIRED 108 U.S.; 0 P.A., EXCESS 1 U.S., 0 P.A. [Nota bene: the excess vehicle MAY have been a command tank, because I have seen war footage showing an M3 passing by without a 37mm gun in its turret.]