The cruiser tank (also called cavalry tank or fast tank) was a British tank concept of the inter-war period. This concept was the driving force behind several tank designs which saw action during the Second World War.

In British use, the cruiser formed part of a doctrine paired with the "infantry tank".

Like the ships of the same name, cruiser tanks were intended to be fast and mobile, and operate independently of the slow-moving infantry and their heavier infantry tanks.

Once gaps had been punched in the enemy front by the infantry tanks, the cruisers were intended to penetrate to the rear, attacking lines of supply and communication in accordance with the theories of J.F.C. Fuller, P.C.S. Hobart, and B.H. Liddell-Hart. The cruiser tank was designed to be used in way similar to cavalry in its heyday and thus speed was a critical factor, and to achieve this the early cruiser designs were lightly armoured and armed.

This emphasis on speed unbalanced the British designs; insufficient attention was paid to armour protection. At the time, the concept of "speed is armor" was considered the overriding concept in the British tank corps (unsurprising considering its birth in the Landships Committee of the Royal Navy, which also applied the concept to the ill-fated HMS Hood)^{[citation needed]}. It was not understood at the time that this principle of mobility over all else meshed poorly with the corresponding German policy of trading speed for superior armor and armament, ensuring that even a single round from a German medium tank could easily destroy a cruiser. German infantry were also widely equipped with handheld anti-tank weapons at a rate far exceeding the expectations of the British, further exacerbating the cruiser's survivability problems while pursuing breakthroughs against infantry forces.

Saint Lorenzo Ruíz or Saint Lawrence Ruíz of Manila (ca. 1600 – 29 September 1637), also known as San Laurentius Ruíz de Manila or San Lorenzo Ruíz de Manila, is the first Filipino saint (protomartyr) venerated in the Roman Catholic Church. He was killed for refusing to leave Japan and renounce his Roman Catholic beliefs during the persecution of Japanese Christians under the Tokugawa Shogunate in the 17th century.

Lorenzo Ruíz was born in Binondo, Manila to a Chinese father and a Filipino mother who were both Catholic. His father taught him Chinese while his mother taught him Tagalog.

Ruíz served as an altar boy at the convent of Binondo church. After being educated by the Dominican friars for a few years, Ruíz earned the title of escribano (calligrapher) because of his skillful penmanship. He became a member of the Cofradia del Santissimo Rosario (Confraternity of the Most Holy Rosary). He married Rosario, a native, and they had two sons and a daughter. The Ruíz family lead a generally peaceful, religious and content life.