Short answers, pulled from the story.
The battle began on the 25th of December 1941 when Soviet forces crossed the Kerch Strait. The conflict concluded in May 1942 after German forces launched Operation Trappenjagd to encircle Soviet armies.
General-Lieutenant Dmitry Timofeyevich Kozlov led four major offensives that all failed against Erich von Manstein's 11th Army. These operations resulted in massive casualties for the Crimean Front while Axis forces suffered significantly fewer losses.
He 111 bombers and Ju 87 Stuka dive bombers attacked exposed Soviet formations starting at 1050 hours on the 26th of December. Fliegerkorps VIII under Wolfram von Richthofen operated 800 aircraft including 740 combat planes from 20 Gruppen during the final phase.
The Crimean Front lost 352,000 men during the four failed offensives conducted from January through April 1942. Total Soviet casualties amounted to 570,000 men over the entire five-month duration of the battle.
Lieutenant General Hans Graf von Sponeck commanded the XXXXII Army Corps defending the peninsula until he was relieved of command on the 29th of December 1941. He faced a court-martial three weeks later after ordering his division to retreat west from Kerch.