Independent of Sumner? Remembering Butler is the 3rd MG(V) and Sumner is a regular BG.
Could you fill in the senior officer's assignments here (in line of seniority)
Major-Generals in the Regular Army
McClellan
Fremont
Halleck
(2 open slots)
Major-Generals in the Volunteer Force
Banks
Dix
Butler
Hunter
Governor Morgan of NY
(historically Hitchcock appointed 28 Feb '62, McDowell 14th March with the idea he'd take the AoP etc.)
Brigadier-Generals in the Regular Army
Wool (Brevet MG, technically should be moved up)
Harney (NB: deliberately unassigned OTL)
Sumner
Mansfield
McDowell
Anderson (NB: sick and not available for service)
Rosecrans
St. Geo. Cooke
(1 open slot)
(BG(V) are as per
here)
Well, filling that out has helped expose a few issues... which are best handled I think by a judicious promotion!
McClellan - AoP commander (and in command of Dept. East), GiC before then
Fremont - Dept. North commander
Halleck - GiC (once McClellan isn't), Dept. West commander before then
(Sumner - AoSL commander)
Banks - AoP corps commander
Dix - commanding Baltimore defences (as per PoD)
Butler - commanding Dept. of New England
Hunter - AotSL corps commander
Morgan - commanding New York defences
Wool - captured
Harney -
not assigned on my chart
Sumner (promoted)
Mansfield -
not assigned on my chart
McDowell - AoP corps commander
Anderson -
not assigned on my chart
Rosecrans - commanding WV (2 divs)
St. Geo. Cooke - AotSL cavalry commander
Heintzelmann - commanding division, NY harbour defences
Keyes - commanding division, Maine
A Porter - AoP corps commander
FJ Porter - AoP division commander under McDowell
Franklin - AoSL corps commander
WT Sherman -
not assigned on my chart
Stone -
not assigned on my chart
Buell - commanding Army of the Ohio
TW Sherman - captured
Oakes - commanding division, Boston defences
Pope - commanding Army of the Mississippi
McCall - AoP division commander under Banks
W Montgomery - commanding Army of the Niagara (at Buffalo)
Kearny - AoP division commander under A Porter
Hooker - commanding division, Philadelphia defences
Phelps - commanding brigade under Oakes
Grant - commanding Army of the Tennessee
JJ Reynolds - commanding division under Rosecrans
Curtis -
not assigned on my chart
CS Hamilton -
not assigned on my chart
Couch - commanding brigade under Keyes
King - AoP division commander under McDowell
Cox - commanding division under Rosecrans
Hurlbut - AoT division commander under Grant
Sigel -
not assigned on my chart
Schenck - commanding brigade under JJ Reynolds
Prentiss - AoT division commander under Grant
Lander - AoP division commander under Banks
Kelly - commanding brigade under JJ Reynolds
McClernand - commanding division, Ogdensburg
AS Williams - AoP division commander under Banks
Richardson - AoSL division commander under Hunter
Sprague -
not assigned on my chart
Cooper -
not assigned on my chart
Burnside - AoSL division commander under Hunter
Lockwood -
not assigned on my chart
Blenker - AoSL division commander under Franklin
Slocum - AoSL division commander under Hunter
Wadsworth - commanding defences of Washington
Peck - commanding brigade under Keyes
Mitchel - AoO division commander under Buell
Morell - AoP division commander under A Porter
Martindale - commanding brigade under FJ Porter
Stoneman - commanding cavalry, AotP
Benham -
not assigned on my chart
WF Smith - AoSL division commander under Franklin
Denver - commanding in Kansas
GH Thomas - AoO division commander under Buell
Viele-
not assigned on my chart
Shields - AoP division commander under McDowell
JF Reynolds - commanding brigade under McCall
Barry-
not assigned on my chart
Abercrombie - commanding brigade under AS Williams
CF Smith - commanding division, Portsmouth
Casey - AoP division commander under A Porter
Graham - commanding brigade under Keyes
Meade - commanding brigade under McCall
Biddle -
not assigned on my chart
Duryea - commanding brigade in Wash Defences
DCs not mentioned on chart:
Pope's DCs Paine and Stanley
Grant's DC Schofield
Buell's DCs McCook, Nelson, GW Morgan
Lew Wallace (at Rhode Island)
Sumner's DC Sykes
Montgomery's DCs Crittenden, Wood
Schuyler Hamilton (at Detroit)
None of these have a subordinate over them, so they can go on the end of the BG(V) list without trouble - though some of them might be made BG(R) instead.
And even before this, by the way, the idea was that Butler is commanding the New England district which does
not include NY (which is where Sumner is).