To clarify, I think it has potential for example because of what
The Dark Lord noted
here: in theory, even in tight spaces you can keep gradually throwing all your Militia in the front and then retreat your valuable Crossbowmen while the last Militia are falling, covering your retreat.
But I'm not sure whether this would kill enough Sword Fighters for the Militia+Crossbowmen strategy to eventually come out on top or not...
As you may have noticed, there are a lot of "ifs"...
if you can flank the enemy,
if you can save your Crossbowmen by retreating,
if you can keep the Militia flowing,
if you do enough damage to the enemy front line... this
may work.
Yet I do not know how well would it work, if it would be worth the effort, and if there are other "ifs" or options I haven't thought about.
Don't get me wrong, "ifs" are a good thing: they symbolize the chance for each player's skill to impact the course of the game.
Sadly though, those "ifs" also make it difficult to appropriately estimate the validity of the strategy.
Peacetime is very important when picking a strategy. How much peacetime did you have in mind?
60, 90, and 120.
Keep in mind that I'm trying to find out when would this strategy be good.
Just when you think you know something, you have to look at it in another way, even though it may seem silly or wrong. You must try! - John Keating, "Dead Poets Society"