Samurai History of the samurai warriors and the battles of the 16th and 17th century including the Sekigahra campaign and the battle of Nagashino.  This military art prints of the Samurai warriors by military artists Chris Collingwood and Robert palmer are only available form Cranston Fine Arts

When Portuguese traders took advantage of the constant violence in Japan to sell the Japanese their first firearms, one of the quickest to take advantage of this new technology was the powerful daimyô Oda Nobunaga. In 1575 the impetuous Takeda Katsuyori lay siege to Nagashino castle, a possession of an ally of Nobunaga's, Tokugawa Ieyasu. An army was despatched to relieve the siege by Nobunaga and Ieyasu, two of the most influential figures in Japanese history, and the two sides faced each other across the plain of Shidarahara. The Takeda samurai were brave, loyal and renowned for their cavalry charges, but Nobunaga, counting on Katsuyori's impetuosity, had 3,000 musketeers waiting behind prepared defences for their assault. The outcome of this clash of tactics and technologies was to change the face of Japanese warfare forever. 

Samurai  Warriors by Chris Collingwood  Samurai Warriors of the Sekighahara campaign 1600.  The most important and decisive battle in the history of Japan, Sekigahara was the culmination of the Power struggle triggered by the death of the great warlord Toyotomi Hideyoshi. The two rivals for power were Ishida Mitsunari and Tokugawa Ieyasu. The contest was ultimately settled by force of arms in a small mountain valley in central Japan. By the end of the day 40,000 heads had been taken and Ieyasu was master of Japan. Within three years the Emperor would grant him the title he sought - Shôgun.