I just want to add, there is a reason why swordsman squads are not mentioned in the book. That's because those don't exist in any semirealistic scenario, other than a few very special groups like royal bodyguards sometimes. Swords are a sidearm. On a battlefield, you use sword if you are a specialist in a unit, like an officer, or a doppelsoldner with a zweihander. Or, well, a shardbearer. The other case when you would use a sword on a battlefield is after losing your primary weapon