Complex sentence: Reno was heavily criticized for his actions, during his lifetime and after (continuing to the present day); some even declared him to have been drunk at a crucial time in the battle and several of his officers and troopers accused him of cowardice and incompetence.
Split into simpler sentences: Reno was heavily criticized for his actions, during his lifetime and after (to the present day). Some even declared him to have been drunk at a crucial time in the battle, and several of his officers and troopers accused him of cowardice and incompetence.