The Battle of El Alamein showed that Hitler was giving too many orders to his leading general in that battle Erwin Rommel who was previously largely successful against the allied forces. Because he was constantly interfering and giving orders it was revelaed that he was osmewhat unskilled when it came to military tactics - C. At least compared to his generals.
Impeachment, proceedings against the president came when Johnson breached the Tenure of Office Act by removing Edwin Stanton, Secretary of War, from the cabinet.
Instituted in the hope of avoiding war, appeasement was the name given to Britain's policy in the 1930s of allowing Hitler to expand German territory unchecked.