map fix

**删除了一张重复的地图，加入了一张新的地图（火车站）
**Deleted a duplicate map and added a new map (train station)

**装甲单位对不同目标选择的优化
**Optimization of armored units in selecting different targets

ger tankman fix

*为m8灰狗添加车顶机枪手；
修复了苏联后期医疗兵缺少医疗技能的bug
*Add a roof mounted machine gunner to the m8 Greyhound;
Fixed a bug in the late Soviet Union where medical soldiers lacked medical skills

**德军和美军部分士兵装备和武器技能的更改
**Changes in equipment and weapon skills of some German and American soldiers