div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=document-northwest-is-leavenworth-location-of-ft-leaven-worth-oldest-army-ost-in-continuoushtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: northwest is Leavenworth location of Ft Leaven- worth oldest army ost in continuous use west of the Mississippi whick was established in 1827 and site of the U S Command and loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader033fdocumentsinreader033viewer20220419045e62720f36efcc0cf531fd2dhtml5thumbnails1jpg width=140 height=200 divdiv