Did Granger's help at Chickamauga explain Thomas's patience with him at Missionary Ridge?
Short answerYes. It earned Granger some leeway, but a corps commander still had to command his corps rather than occupy himself with one battery.
NotesGranger had helped Thomas at Chickamauga when Thomas risked being flanked, so Thomas had reason to grant him some latitude. At Missionary Ridge, however, Granger became absorbed in directing a battery while his corps awaited action. His earlier service did not remove the duties attached to his current rank. A corps commander had larger responsibilities than those of a captain or major commanding artillery.