FFS dude.
What military or strategic interest did Coventry have? It house factories and workers that helped supply the British economy and war-machine. Coventry wasn't a town that produced nothing but tea-cosies and hell, neither was Dresden.
Apparently Dresden contained:
"The Zeiss-Ikon optical factory and the Siemens glass factory (both of which were entirely devoted to manufacturing military gunsights).
The immediate suburbs contained factories building components of radar and electronics, and fuses for anti-aircraft shells. Other factories produced gas masks, engines for Junkers aircraft and cockpit parts for Messerschmitt fighters."
http://www.nationmaster.com/encyclopedia/Bombing-of-Dresden-in-World-War-II
(Interestingly enough, this website says a justification for the attack was that it was requested by the Soviets to counter a German Armour Division moving through and for the RAF to demonstrate its power to the Russians who were going to take the city.)
As for Coventry:
"Coventry played a pivotal role in World War Two, as a munitions centre and target for German air raids. The city's character, architecture and population remain forever entwined with war events.
The Blitz
In World War One, Coventry became established as a centre for the motor industry, a business which boomed with the war's reliance on transport. By the time war broke out again in 1939, many new factories had been built in and around the city, and a large number of local people were employed in the motor industry.
During World War Two these factories built cars, engines, armaments and aeroplanes, all of which contributed to the war effort. This industrial activity made it an obvious target for German air raids.
On 14 November 1940, 500 German bombers dropped 500 tons of explosives and nearly 900 incendiary bombs on Coventry in just ten hours. The city was almost destroyed and the bombs claimed many lives."
http://www.bbc.co.uk/dna/ww2/A1064648
Just for the record to posters in the history forum, don't just make **** up.