"The TF headquarters rotates individually by position and positions remain in location for at least 9 months, preferably a year - ie a fresh Comd will have a COS who is at the midpoint of his/her tour, etc, etc. If the G3 rotates, the other "3" positions will not be brand new so will lend some continuity to bring the new 3 up to speed and reduce the work and effort of handing over every position all at once. This will prevent what has happened on many many rotations before, where no sooner has the last roto's TF HQ stepped on the plane, then all their work, SOPs, lessons learned, etc are scrapped, "because they were f&*$ up", sent to the burn barrels and a plethora of otherwise underemployed staff officers busily starts recreating them to make them fit the "1/2/5 CMBG or R22eR/PPCLI/RCR way". This enables the "leading change" PF on a Theatre PER to be clicked into the "M" column, but other than that serves no useful purpose save satisfying the desires of those who need to put their stamp on things "just because". I am sure there are others who have seen this duplication of effort and shook their heads.
The various BG headquarters serve a year (preferably) or 9 month rotation. Within that year, the BG Comd can rotate individuals in by position as he and the vagaries of career progression, postings, career courses, performance and requirements dictate. Specialists (ie MP det, CIMIC, HUMINT, etc) can be rotated by staggered halfs, much like CC UNDOF used to do on the Golan Heights, where Roto 54 (half the contingent) left, replaced by Roto 56, while Roto 55, who had rotated in at the 3 month point of Roto 54's six month tour, remained intact.
Sub units serve on a 9 month rotation, command team intact, rotated as BG HQ above if required. Sub units should also stagger with other sub-units so that there is always at least one "experienced" one on hand who has a few months of corporate knowledge.
Sub-sub units rotate out on a 6 month rotation, staggered. Therefore, OC "A" Coy will, at any given time, have 1 platoon nearing the end of a stint, 1 platoon at the beginning and 1 platoon at the midpoint. This will keep corporate knowledge from being completely lost and will ensure that there is no completely "new" company in the hopper. While not the best solution for maintaining sub-unit integrity, it's an 80 percent solution between individual rotation and complete unit rotation, which I find puts a whole unit in either the "new jittery stage" or "end-tour windup" stage, complicated by the leave plan sapping strength almost as soon as people start learning their jobs"
I hate saying I am "just a Cpl" here because most of the time that isn't the case but your wordage is a little confussing for me in this sense. At which level is the rifle coy? Sub Unit, Sub sub unit, higher in the overall package. (Basically what's it all mean Basil.) I am not sniping but if we compare those that sit in KAF (and I am not saying you are) with those that go out and spend the majority of their time outside the wire I believe reflects differently on deployment timetables. I could do a year standing on my head if I never left KAF. Also it becomes a dangerous game when we compare ourselves to our allies with only know some of the conditions in which they operate.