Since Rubicon are going to bless us (shortly) with the arrival of a number of LVTs, including the LVT-2, LVT-4, LVT(A)-1, LVT(A)-2, and LVT(A)-4, I thought the following info might prove useful:
Model Built Distribution & Use Production Data
LVT-1 1,225 540 USMC, 485 US Army, 200 Allies - 72 (1941), 851 (1942), 302 (1943)
First used on Guadalcanal (Aug 1942) but only to ferry supplies.
Also used on Bougainville (Nov 1943), Tarawa (Nov 1943) and New Britain (Dec 1943).
LVT-2 2,962 1,355 USMC, 1,507 US Army, 100 Allies - 1,540 (1943), 1,422 (1944)
First used on Tarawa (Nov 1943).
Also used on New Britain (Dec 1943), Kwajalein (Feb 1944), Eniwetok (Feb 1944),
Saipan (Jun 1944), Guam (Jul 1944), Tinian (Jul 1944), Peleliu (Sep 1944), Iwo Jima (Feb 1945)
and Okinawa (Apr 1945).
LVT-3 2,964 2,962 USMC - 1 (1943), 733 (1944), 2,230 (1945)
First (and only use) on Okinawa (Apr 1945).
For a number of reasons, this craft was not available for combat use until the invasion of Okinawa in April 1945.
LVT-4 8,351 1,765 USMC, 6,086 US Army, 500 Allies - 11 (1943), 4,980 (1944), 3,360 (1945)
First used on Saipan (Jun 1944).
Also used on Guam (Jul 1944), Tinian (Jul 1944), Peleliu (Sep 1944), Philippines (Oct 1944),
Iwo Jima (Feb 1945) and Okinawa (Apr 1945).
LVT (A)-1 510 182 USMC, 328 US Army - 3 (1942), 288 (1943), 219 (1944)
First used on Kwajalein (Feb 1944).
Also used on Eniwetok (Feb 1944), Saipan (Jun 1944), Guam (Jul 1944), Tinian (Jul 1944),
Peleliu (Sep 1944) and Okinawa (Apr 1945).
LVT (A)-2 450 450 US Army - 200 (1943), 250 (1944)
First used on New Britain (Dec 1943).
Also used on Kwajalein (Feb 1944), Iwo Jima (Feb 1945) and Okinawa (Apr 1945).
Essentially an armored version of the LVT-2, with minor differences to the cab area. In addition,
over 1,000 of the LVT-2s listed above (those built starting in March 1944) were assembled using
the armored cab specifications, giving them an appearance similar to the LVT (A)-2, but they
were not given the official (A) designation.
LVT (A)-4 1,890 533 USMC, 1,307 US Army, 50 Allies - 1,489 (1944), 401 (1945)
First used on Saipan (Jun 1944).
Also used on Guam (Jul 1944), Tinian (Jul 1944), Peleliu (Sep 1944), Iwo Jima (Feb 1945), and
Okinawa (Apr 1945).
Early models proved to be vulnerable to enemy close assaults due to a lack of machineguns.
After Tinian (Jul 1944) the LVT (A)-4 was modified, and went from a single .50 MG (with no shield)
located at the rear of the open turret (in a ring), to having two .30 MGs, one on each side of the turret
(each with an armored shield). A third .30 MG was added in a ball mount in the hull. This revision was
known as the “Marianas Model”, and would be seen in battles after Tinian.
The only two LVT models missing from the Rubicon lineup are the LVT-1 (used in early war Pacific battles), and the LVT-3 (which was only available for a single campaign during the late war period). For Guadalcanal and Bougainville the LVT-1 was the ONLY LVT used. So the lack of an LVT-1 is a "hole" in the lineup (so to speak). There are other craft available to cover Okinawa.
For Europe, both the LVT-2 and LVT-4 were in Commonwealth service from late 1944 (August) through the end of the war.