FAMOUS LAND BATTLES, by Richard Humble (Little, Brown, $17.50). This study of land warfare from the age of the longbow to the recent past commences with Henry V's triumph at Agincourt in 1415 (a winning combination of pluck, luck and unerring archers) and concludes with the Six Day War. It examines 18 celebrated encounters, mixing a textual background and summary with battlefield maps, and photographs and illustrations of the fighting. AIR POWER, by Bill Gunston, David A. Anderton and Bryan Cooper. LAND POWER, by Major General H. Essame et al. SEA POWER, by Anthon Preston and Louis S. Casey (all Exeter/Bookthrift, $14.98). John Batchelor lavishly illustrated these histories of the evolution of 20th-century armament. Combat photographs and Batchelor's detailed drawings and cutaways are interwoven with textual descriptions and evaluations of the various weapons in the World Wars. TACTICAL GENIUS IN BATTLE, by Simon Goodenough. Edited by Len Deighton (Phaidon/Dutton, $16.95). Goodenough and Deighton offer brief descriptions of 27 geographically and temporally far-flung battles, grouping them around classic tactical schemes such as the flanking attack, the direct assault and the encirclement. The weapons and warriors change; battles and commanders differ greatly; tactics endure: MacArthur at Buna borrows a page from Grant, whose flanking movement at Vicksburg mirrors that of Themistocles at Salamis in 480 B.C. A PICTORIAL HISTORY OF TRHE WORLD WAR I YEARS, by Edward Jablonski (Doubleday, $14.95). Illusion -- smiling soldiers tramping off to war; spit-and-polish generals poring over maps. Reality -- rain-soaked trenches; the skeleton of a long-dead German in the battlefield muck. A not-so-lovely war captured in text and photographs. 2194 DAYS OF WAR, compiled by Cesare Salmaggi and Alfredo Pallavisini (Mayflower, $29.95). A day-by-day, theater-byitheater account of the Second World War. The reader crosses the Polish border with the Wehrmacht in the early morning of September 1, 1939, then traces the devastating and tortuous path to the signing of the Japanese surrender on the battleship Missouri on September 2, 1945. Illustrated with 620 photographs and 84 maps. LIBERATION, by Martin Blumenson (Time-Life Books, $9.95). Blumenson traces the 1944 Allied advance from D-Day to the "bridge too far" at Arnhem. One has a sense of having seen the combat photographs; not so the photographs of civilians trying to cope: a little girl pulling a small cart bearing her doll through the Normandy rubble; an old woman shuffling down a country road past Allied troops, using her cane and a commandeered tree limb for support.