according to some SF, top down.
according to grunts, bottom up in practice, though top down would
be nice.
if youre going loud [hard not to if theres alot of you], then go
loud. bang every room since they [opfor] know youre in the
immediate area anyway.
the last formal training i did was with both grunts and SF, and we
assembled teams to assault every floor at the same time lol - SF
request.
But that did work, there were chokepoints [as questioned in this
thread], but with the large-scale assault of all teams at the same
time managed to overwhelm even the chokepoints.
the overall idea above was provided by SAS, and is similar to the
technique they used for the Princes Gate siege. Only they didnt
have a specific bottom-up force as it wouldve been too obvious in
that environment. i gather that if they could have, they wouldve
done it the way they conducted us.
the idea being to dominate the enemy very quickly in all areas at
the same time if possible.
we did tubular assaults with them as well and the same idea was put
in training, with similar results.
yes, this can result in larger numbers of casualties, and if youre
not trained properly even friendly fire, but the idea was to get
the job done very quickly.
Did something similar with police, and if youre short on numbers
they applied the same basic army way - bottom up. if they had the
numbers of SF then theyd do it the SF way.
so, i guess, in summary, if you got the numbers, all floors; if
youre SF, top down; and if youre everyone else ~ and/or short on
numbers ~ its bottom up..
as OP asked, with skyscraper, i guess you go from top and bottom
and meet in the middle..
heh, i could be completely wrong but there you go.
dont you guys go through this, or something like it, for FIBUA/OBUA
in NS ?