He has a reputation as a rather bloody but effective commander.
He developed a reputation as an effective if lucky commander.
The less effective commanders didn't understand this.
Although a solid team member, he is too introspective to be a truly effective commander.
It was a wonderful thing to be the effective commander of both sides in a battle!
He's the most effective commander in the Resistance.
Since the baron was too sick to assume his post, Smith became the effective commander.
It was beginning to look as though she had the makings of an effective commander after all.
You can't be an effective commander in chief if you don't have credibility.
Téllez proved to be an effective military commander.