The left wing of Ondoher's army was commanded by Adrahil, the Prince of Dol Amroth, the right wing was commanded by Minothar, the captain of Gondor's armies.
The left wing of Ondoher's army was commanded by Adrahil. This was what the Prince of Dol Amroth was commanded by Minothar. Minothar was the captain of Gondor's armies. Dol Amroth was the right wing.