sentences:  As commander-in-chief, he ordered the suspension of the constitutionally-protected right to habeas corpus in the state of Maryland in order to suppress Confederate sympathizers.He also became the first president to institute a military draft.As the Union faced several early defeats in the Eastern Theater of the American Civil War, Lincoln cycled through numerous military commanders during the war, finally settling on General Ulysses S. Grant, who had led the Union to several victories in the Western Theater.