Certainly, the Battle of Lepanto in 1571 stands out. Fought between the Holy League (a coalition of Catholic maritime states) and the Ottoman Empire, it was one of the largest naval battles in the early modern period. The conflict showcased the prowess of galleons and the innovative naval tactics they inspired. The Holy League's victory was attributed in part to the superior firepower of their galleons, coupled with effective tactics like the line of battle. The Battle of Lepanto underscored the growing significance of naval technology and tactics, demonstrating how they could shape the outcome of major maritime conflicts.

Star forts or bastion forts were architectural responses to the challenges posed by gunpowder artillery. Their angular designs, featuring protruding bastions, allowed for defenders to have clear lines of sight and counter-fire capabilities, covering all angles of approach. The walls of these forts were often lower and thicker, with a propensity to absorb and deflect cannon shots rather than being breached. Furthermore, these forts incorporated ditches and multiple defensive layers, making direct assaults considerably more challenging. By dispersing the impact of artillery and providing retaliatory firing angles, star forts effectively mitigated the dominating influence of gunpowder-based weaponry on the battlefield.

Beyond just military fortifications, the introduction of gunpowder influenced urban planning and architecture in cities and settlements. Recognising the vulnerabilities of tall structures to cannon fire, urban designs started favouring lower, sturdier buildings. Walls around cities became thicker and incorporated bastions, allowing for defensive artillery placements. Broad avenues and open squares, which could serve as potential gathering spots for opposing forces or areas of vulnerability during bombardments, were often rethought, either fortified or limited in number. Additionally, the placement of armories, barracks, and defensive positions within city layouts became more strategic, ensuring quick responses to threats while maximising the advantages offered by gunpowder weaponry.

The shift from traditional archery to firearms had profound implications for infantry tactics and formations. Bows, especially the longbow, required extensive training and physical strength to master. With the introduction of firearms like the musket and arquebus, soldiers could be trained more quickly, even if the early firearms were slower to reload. New formations, such as the Tercio, emerged. This formation integrated pikemen and musketeers, protecting the musketeers during their long reload times. Pikemen would fend off cavalry, while musketeers offered ranged firepower. This symbiotic relationship between pikemen and musketeers showcased the evolving nature of battlefield tactics in response to technological advancements.

Before the introduction of gunpowder, medieval European warfare largely relied on a combination of melee weapons, archery, and various siege engines. Swords, maces, and lances were standard for hand-to-hand combat, whilst longbows and crossbows provided ranged capabilities. Siege warfare depended on trebuchets, battering rams, and ballistae to breach fortifications. These traditional forms of warfare emphasised the importance of heavily armoured knights and infantry formations. The introduction of gunpowder marked a radical shift from these methods, ultimately diminishing the significance of heavy cavalry and traditional siege engines in favour of artillery and firearms.