...batteries. I am under obligations to Commander C. R. P. Rodgers, U. S.N., for skilfully serving four siegeguns in battery Sigel on the eleventh. Lieut. P. H. O'Rourke, Corps of Engineers, and Adam Badeau , Esq., volunteered, and served on my staff as aids during the tenth and eleventh. Sergeant J. E. Wilson, of Co. A, Corps of Engineers, (regular army,) did excellent service in mounting the heavy ...