...asion he entered the rebel camp alone in advance of the attack, and reconnoitred the enemy's position.--the rebel partisan Standwaite, with a portion of his force, made an attack upon the outposts of Fort Gibson, Ark. , but was repulsed, and compelled to retreat across the Arkansas River.--A body of Stuart's cavalry made a descent at eight o'clock this night upon company I, of the One Hundred and Fifty-fifth New Yo...