Global sales of arms and military services by the 100 largest defense contractors increased in 2010 to $411.1 billion, according to the Stockholm International Peace Research Institute. The increase reflects a decade-long trend of growing military spending. Since 2002, total arms sales among the 100 largest arms manufacturers have increased 60%. More and more, battles are fought remotely through air surveillance and strikes rather than on-the-ground combat. As a consequence, seven of the 10 largest companies are among the leading aerospace companies. Surveillance and battlefield communications also are increasingly important in modern warfare. All of the companies in the top 10 have significant electronics divisions. Of the 100 companies on the list, 44 are based in the U.S. The American companies account for more than 60% of arms sales revenue of the 100 manufacturers. Seven of SIPRI's top 10 are American, one is British, one is Italian and one is a multinational EU conglomerate. These are the 10 companies profiting most from war. 10. United Technologies. Arms sales 2010: $11.41 billion 9. L-3 Communications. Arms sales 2010: $13.07 billion 8. Finmeccanica. Arms sales 2010: $14.41 billion 7. EADS. Arms sales 2010: $16.36 billion 6. Raytheon. Arms sales 2010: $22.98 billion 5. General Dynamics. Arms sales in 2010: $23.9 billion 4. Northrop Grumman. Arms sales 2010: $28.15 billion 3. Boeing. Arms sales 2010: $31.36 billion 2. BAE Systems. Arms sales 2010: $32.88 billion 1. Lockheed Martin. Arms sales 2010: $35.73 billion.