He decided to concentrate his defenses near the Seelow Heights .
He deployed a small number of units , enough to screen the Oder river , as the opening defenses while making three defensive lines behind the Seelow Heights , where a large amount of his forces were concentrated .
Deciding to concentrate his defenses near the Seelow Heights , he deployed a small number of units , enough to screen the Oder river , as the opening defenses while making three defensive lines behind the Seelow Heights , where a large amount of his forces were concentrated .