Valkyria Chronicles Episode 5

For your second question: There is no kid named Hans in the game... So either the anime studio failed and anmed a random character Hans or they decided to name him after the pig. :O

The importance of the animal trail is that their is a ready-made path to the enemy, meaning that the flanking troops don't have to wade through the wilderness; taking much needed time, wasting the energy of the soldiers, who could possibly arrive at the incorrect point for a successful attack