[scorpio_rocks]

When building a scenario you MUST set the "global beach variable" to let game know its a beach assault.

from manual:

$

Use this to set or reset the global beach variable 'gBeach' of the map for beach assault missions (triggers purchase of landing craft, use of naval off map artillery etc). Very useful for folk who made a large water map and forgot to make it using the normal 'convert 1 side of the map to beach' key! use this key after you have loaded the map into the editor, and before you purchase any troops at all, or difficulties can occur. This section of code will check to see that this is an assault mission, and will prompt you if it is not, you can elect to not follow this advice, but non-assault beach scenarios can have strange results. The game is intended only for assaults when the beach flag is on, remember! Note that when you purchase the assault nation's troops you will be asked if you want to buy the landing craft for them, in some circumstances you may not want to do this (say for a batch of troops on an island, which the human player will ferry over as secondary waves, using the first wave's transport). Note also that before the landing craft are bought, the code will now try to load up any swimming or flying transport craft with troops, before it buys the landing craft, so it will load up any separately bought amtracks, DUKW or Dakotas you have purchased, unlike the original SP series games!