I understand you made this comment months ago, but I feel the need to add something anyways. Hopefully to help others new to the manga and comments section too.
I read the WN so I have a bit of context for the manga. I'll only cover what the manga missed so far, so no spoilers for future chapters.
Chapter 1 page 19 and page 30-32. Additional context is Highserk recruited Sarria soldiers into their ranks as their own, hence the reason why they are mad when they finally caught up to the preivously Duke of Kanoa, now the
Context from chapter 1 and some of the Web Novel. Kanoa Kingdom was a territory conquered and incorporated into Highserk before this current war with Myard. Sarria City was the last city of Kanoa to fall. Kanoa's Nobles had defected north and joined the Principality of Myard while cozy'ing up with Ferrius (kingdom north of Myard). During the defection, whatever he harvested and salvaged from the scorched earth tactics was also brought to Myard. This left the city in poverty, which you can see illustrated by all the beggers and prostitutes in the streets in Chapter 1 of the manga. This gave the previously citizen's of Kanoa/Sarria incentive to join Highserk and join the war with Myard.
Context for the war with Myard. Ferrius and Myard created an alliance to stop Highserk's very quick and aggressive warmongering. This is why the combined Ferrius and Myard army was larger than Highserk's. Not to mention the guerilla tactics from Myard to whittle Highserk's numbers before the battle.
Despite each manga chapter being 20+ long pages, they're still skipping a lot of context. A lot of battle formation text, POV's from both army commanders, how Walm ended up awakening blue fire, the extended significance of the blue fire.
Here's some trivia.
The Current (now deceased) King of Myard is Euth Myard, he was previously Grand Duke of Kanoa.
Walm's blue fire attack - It's combination of Fire and Wind. Yes MC has affinity for wind magic; they tested all 4 elements (earth, water, wind, fire) during the magic testing section, but the wind and earth testing was glossed over in the manga. The big powerup is that he managed to use 2 elements at once which combined into Blue Fire.
Walm's Magic affinities - Fire (High) - Wind (High) - Water (Low)
Earth magic is also highly valuable in war and battle:
- Trench diggers for defense
- Moat Diggers for defense
- Moat Fillers for offense against forts and castles
- Hill Makers for creating slopes to scale fort walls (you see this in the manga battle against the fort)
Anyone who can use magic or skills passively coats themselves with a magic barrier. This is the magic users defense against other magics. The Knight during the border fort battle notes Walm having a barrier, right before Walm uses his <<Strike>> against the Knight.
While most of the Highserk soldiers are given standard equipment, the soldiers who survive will scavenge equipment from the fallen they defeat. Walm has taken the Polearm from the Knight at the Border Fort. His Longsword was also scavenged from his first battle back in Liberitoa (chapter 1 of the manga).
The Highserk army organization - Battalion -> Company -> Platoon -> Squad
(Some of the) Highserk battalions -
- Liguria Battalion: MC Walm's battalion
- Sarria Battalion: composed entirely of Sarria citizens, light infantry
- Jeff Cavalry Battalion: Highserk's Pride, Pillar, and strongest battalion. Composed of cavalry. Led by Jeff. Typically works with other light infantry battalions who distract/hold down enemy troops in order for the Cavalry to reposition and charge)
Why was Liguria battalion (with no experience with coordinating with cavalry before) selected to charge with the Jaff Cavalry Battalion? - The other light infantry battalions were too exhausted to keep with for the charge that was planned, and Liguria battalion was selected due to MC (Strike Skill user), Squad Leader Duwei (Strike Skill user), and Willart (Mage) standing out during the Border Fort battle.
Walm's Squad members
- Jose - son of a merchant, lets him be a better conversationalist with Walm.
- Willart - Mage, high Fire and high water affinities. Conjured Magic water is potable, thus both Wilart and Walm are used as fresh water dispensers during marches/travel.
- (WN Only so far) The Three Idiots (Reinus, Tibird, Danfan) - Background characters known for goofing, being unruly, generally un-educated. The "average" soldier who drinks, has sex, and pillages.
- Barito - Rookie addition to the squad, first battle was the taking of the Myard Border Fort. Since most rookies die in their first battle, Jose was in charge of Barito.
- Noor - Rookie addition to the squad, first battle was the taking of the Myard Border Fort. Walm was in charge of getting Noor through their first battle.
Notable moments of the Border Fort Battle
- Noor dropped her shield when it was hit by the water ball. Walm advised her "Don't drop the shield! Even if your arm is torn! It's better than dying."
- Walm joked about the water ball as "playing with water". The joke was well received by his squad members. Gives us a good indication that he's a morale booster for his squad.
- When Walm was still advancing on the wall with their shield, he noticed Willart's fireball landing a good hit on the soldiers on the wall. Walm then yelled and praised Willart "Good! Willart, Good!". Willart responded with a smile. (This likely led to Willart deciding to teach Walm magic later after hearing about Walm's interest in it). Willart later saved Walm again on the ladder; this was depicted in the manga.
- Once the squad got to wall, and they needed to fill the moat. During this time, the enemy landed a good fireball hit and exposed their shields a bit. Noor was busy filling the moat with her hands and head down and didn't notice an incoming rock thrown from the wall. Walm noticed and saved her before giving some advice. "Don't worry. more than that, Don't focus only there. Remember, the enemy is on top." The moat took 2 hours to fill.
- Walm's resolve to fight the Knight on the ramparts was mostly because he could not live with himself if he retreated and let his protégé Noor die. This is where he notes that it's supposed to be Squad Commander Duwei's job (the <<Strike>> user) to challenge the enemy leader.