Help on Second Russian Level

[Daktor]

I'm on the second mission (protect the train), playing on hard. I can get to about 93% but by then all of my mines are used up and the enemy just keeps sending wave after wave of 4 75mm medium tanks and *!#@loads of infantry.


Here's the strategy I used to get to 93%:

Heavily mine the two roads approaching the train (north and south of the ammo warehouse). After about 80%, the AI repeatedly sends waves of tanks/infantry on both of those roads. The first 3-5 waves are destroyed by mines, resulting in a graveyard of tanks to the north and south of the warehouse. Later waves of infantry/tanks use this graveyard as cover from my fixed gun emplacements. I saw one enemy tank pushing the exploded hull of another enemy tank in front of it, effectively blocking it from many AT rounds. The only way I could kill it was to send a suicide infantry assault.


Alot of the strategies listed here don't seem feasible. I had 6 AT guns firing at a 75mm enemy tank with no effect for ~8 salvos. Mines and AT grenades seem to be the only effective defense against tanks. Anyone know some good strategies for this mission on hard?

Thanks!