An interesting graphic from the UK Daily Mail.
A mech brigade doesn't necessarily need armour. Not every brigade is an ABCT. Even SBCTs do not have tanks. There are enough tanks to flesh out one brigade well and two in a half-assed fashion easily to the standard of an SBCT.
The same for guns. SBCTs use M777s and we have enough guns for one and and two-thirds battalions. I don't like the M777 for a mech brigade either but if its good enough for an SBCT then it will do for us as well. We can fairly easily pick up another six guns to round out two battalions. We already have more than enough FSCCs, FOOs and JTACs. No ABCT or SBCT has rockets. They're a divisional and corps asset as is aviation of which we do have some resources in 1 Wing.
Air defence is the same issue. No ABCT or SBCT has organic air defence units, just scattered Stingers which as I indicated could be UOR'd fairly rapidly. Note as well that 4 RCA(GS)'s has established an AD battery that is becoming the centre of all things command and control of air defence resources while another utilizes the MRRs. That provides critical AD system linkage to whatever theatre resources there are.
There are TOW for anti-armour but quite frankly what's needed could be UOR'd if the situation demands it. My guess is that we will be dealing with this deficiency in the short term.
Between the three RegF brigades, there are enough CSS resources to flesh out two brigades and there is even enough non-tactical CSS transport to flesh out far-rear area supply and transport requirements.
Like I said before, I think Canada's Army is underperforming. I just disagree with the statement that it can't field a brigade. I'm of the view that Canada could field two SBCTs equivalents with fairly minor capability gaps that could be filled rapidly through UORs. In addition there is enough depth in both RegF and ResF personnel that we could sustain them at least through a Roto 0 and 1.