A baton sword, also known as an espada bastarda or spadone, is a type of European sword that originated in the 16th century. It is characterized by its long, slender blade and a ricasso (unsharpened portion of the blade near the hilt) that allows for two-handed use. The baton sword was primarily used by infantry soldiers and became popular during the Renaissance and Baroque periods.

The term "baton" refers to the sword's design, which features a hilt with a straight crossguard and a grip that provides a secure hold for both hands. The baton sword typically had a straight or slightly curved blade with a single edge, though there were variations.

The length of the baton sword varied, but it was generally longer than a typical one-handed sword. It was designed for use in close combat, offering reach and versatility on the battlefield. The sword's length and balanced design allowed for powerful cutting and thrusting techniques.

The baton sword saw use in various European countries and played a role in military conflicts of the time. However, with the evolution of warfare and changes in combat techniques, the popularity of the baton sword gradually declined by the 18th century.

Today, baton swords are primarily found in historical collections and museums. They are appreciated for their unique design and historical significance as representative weapons of the Renaissance and Baroque periods.