22.4.12 Amphibious units
(replaces third paragraph)
If you are playing with the amphibious option, you can't transport aircraft or artillery units on AMPHs. One AMPH can transport one ARM division or MECH division, using all of its transport ability. It takes two AMPHs to transport an HQ-A, ARM, or MECH corps/army; if either AMPH is sunk, so is the corps/army; if either is damaged, the corps/army is shattered; and if either is aborted, the corps/army aborts with it. Both AMPHs must be either in the same port or sea box when they embark the HQ-A, ARM or MECH corps/army, and must end their move in the same port or sea box.
(add to end of fourth paragraph)
HQA, ARM, and MECH units on AMPH can invade like any other unit.
Background/Purpose: small tank formations were known to invade. It is theoretically possible that a corps/army sized tank unit could have invaded as well, but it would have required a tremendous amount of specialized shipping -- two AMPHs, to be precise.