Couple of points about Stephen den Beste's essay on the
changing nature of warfare, specifically on the Macedonian
contributions to warfare, and a slightly different analysis of the
two-and-a-half "revolutions" in warfare.
Macedonians:
The significance of the Macedonian pike wasn't just the pike itself,
although that was a pretty impressive weapon in conjunction with the
phalanx. What made the pike work was the professional army wielding
it -- Victor Hanson argues that one of the main virtues of the
hoplite/phalanx style of warfare was that it required no practice for
the greek farmers, only some equipment and massive amounts of courage.
But the unwieldy pike was another matter entirely, requiring lots of
formation practice such as you described in your essay. The
Macedonian army was the one of the first large, full-time armies.
The second innovation was the combined-arms assault (in his case
infantry and cavalry) with each leveraging its strengths
simultaneously to destroy the enemy.
The third thing was the use of the catapulta and ballista for
destroying enemy towns, although the catapult wasn't a Macedonian
invention, it reached its maturity during Phillip's reign. This tends
to get overlooked a bit, because this was only really a factor in the
first few years of his campaign (the catapult wouldn't become a
battlefield piece until the Romans), but it allowed him to quickly
capture the Persian fortified cities on the mediterranean coast, which
secured his rear lines and provided major logistical support during
his campaign.
Revolutions in warfare:
Also, I would argue that your "second revolution" didn't really occur
the way you described it. The first revolution was the tight
coordination at the lower levels of the army. For the classical
Greeks, this basically meant that all the troops from a polis' (or
possibly a tribe within that polis in the case of a really big polis
like Athens or Thebes) acted as one tightly coordinated unit. But
there was very little coordination or discipline between the various
polis. This was due to rivalries between the various polis and the
difficulties in communicating (ok, yelling) amidst the clamor of the
battlefield, and it did indeed place a premium on troop-level
discipline and strategos-level independent action.
The Persians against which the Greeks fought, maintained tight control
of each large unit, but their army was much less well coordinated at
the finer level.
The Greek method obviously worked better in practice, partly because
it demanded discipline and coordination at the level where it was
practical to achieve under battlefield conditions, while the Persian
system quickly fell apart at first contact with the enemy, as the old
aphorism goes.
The "second revolution" that started occurring between WWI and WWII
was basically a shift from the Greek system to the Persian system, as
technology made possible the tight coordination between division-level
units, while simultaneously the increased battlefield lethality had
forced the individual troops to spread out to the point where tight
coordination was becoming awkward, so you began to see more of a
reliance on squad- and troop-level initiative.
If this analysis is correct, then the potential of the Army's various
"networked soldier" initiatives may well be staggering, even though it
all looks pretty silly at the moment.