Galicia–Volhynia Wars vs Polish–Lithuanian–Teutonic War (Great War)

Lithuania successfully applied asymmetric warfare tactics (hit-and-run, partisan warfare) and was able to resist a numerically superior enemy for a long time. Poland initially relied on conventional siege warfare but showed flexibility by moving towards a diplomatic solution when it failed.

The Polish-Lithuanian forces demonstrated doctrinal flexibility by combining heavy cavalry shock, light cavalry skirmishing, siege operations, and deception; the Teutons relied rigidly on traditional heavy cavalry charges.

Attrition War — Lasting over fifty years, it consisted of intermittent clashes, sieges of castles, and mutual raiding; the ultimate outcome was determined more by diplomatic maneuvers and the resolution of succession crises than by military strength.

War of Annihilation — At Grunwald, the annihilation of almost the entire Teutonic leadership cadre aimed to end the war in one stroke; however, the failure to capture Marienburg prevented total destruction.

Poland correctly identified the Schwerpunkt by focusing on capturing the fortified cities of Galicia (especially Lviv), thus controlling the region's commercial and administrative center. Lithuania, on the other hand, dissipated its forces among constantly changing objectives and could not fortify Volhynia properly.

The Teutons failed to identify the correct center of gravity; the Polish-Lithuanian army focused on forcing the enemy's main body into a decisive battle at Grunwald and destroying it through envelopment.

Lithuania, in 1340, used the Golden Horde to threaten Poland from the south and forced Casimir III to retreat. However, in the following years, Poland managed to diplomatically trap Lithuania into its political orbit through the marriage of Jogaila and Jadwiga.

The Polish-Lithuanian army concealed its main axis of advance through border raids and used a feigned retreat tactic (the Lithuanian wing) to draw the Teutons into a trap on the battlefield.

The heavy cavalry charges and siege engines of the Polish-Hungarian army were effective in breaking Lithuania's wooden fortifications. In contrast, Lithuania, with archers reinforcements from the Golden Horde, wore down the enemy infantry and achieved psychological superiority.

The initial charge of the Teutonic heavy cavalry was strong but failed to break the Polish-Lithuanian lines; in contrast, the countercharge of the allied cavalry and the harassing fire of Tatar light cavalry created a shock effect.

The marshy and forested terrain of Galicia and Volhynia restricted the movement capability of heavy Polish-Hungarian units. Lithuanian light cavalry, on the other hand, could use this terrain to their advantage by making sudden raids. Winter months were generally preferred for attacks, giving an advantage to Lithuania's more resilient troops.

The open terrain of the battlefield allowed heavy cavalry maneuver, but the unexpected deployment and use of terrain by the Polish-Lithuanian army disrupted Teutonic formations; the summer season was conducive to prolonged operations.

Lithuanian princes, through dynastic marriages and local spy networks, were able to closely follow developments in the Polish court. They quickly took action during critical moments such as the death of Casimir III and gained territory. In contrast, Poland could not sufficiently read Lithuanian internal politics.

The Teutons perceived the ethnic and religious diversity of the Polish-Lithuanian army as a weakness, but failed to foresee how this diversity became an advantage under unified command.

Lithuania, thanks to its internal lines advantage, was able to shift its forces faster than Poland and launch diversionary attacks on multiple fronts. Poland, on the other hand, experienced coordination problems with its Hungarian allies and was often forced to concentrate its campaigns on a single axis.

The Polish-Lithuanian army utilized speed by quickly assembling at Czerwińsk and crossing the Vistula; the Teutons responded with a parallel march but failed to seize the initiative.

On the Polish side, the support of the Catholic Church and the rhetoric of a 'holy war against infidels' kept the soldiers' motivation high. In Lithuania, the personal charisma of Liubartas and dynastic ties were effective in securing the loyalty of local boyars, but prolonged war fatigue gradually lowered morale.

The Teutonic Knights had high morale due to their religious mission and chivalric pride; however, the crushing defeat at Grunwald and the death of their leaders led to psychological collapse, while on the Polish-Lithuanian side, motivation as a Christian bulwark against the pagan threat boosted morale.

Poland, through its diplomatic alliance network with the Papacy and Hungary, managed to turn the war into an international crusade atmosphere. Lithuania tried to attract local boyars to its side by using Orthodox influence in the region, but this was not enough.

Pre-war diplomatic efforts were unsuccessful; however, after Grunwald, Poland-Lithuania isolated the Order politically by swaying its allies to their side.