Phagocytes are the Leukocytes that respond to nonspecific foreign invaders. While Lymphocytes respond to specific invaders. These are components of the blood that are triggered by the immune system when invaders (e.g. bacteria, virus) enter the body. Without these components in the blood, the body will not be able to protect itself from numerous diseases. These are major defense mechanisms of the body.
the first time the allies opened a second front in Europe was in southern Italy in 194(1-3). it wasn't very effective bc hitler was able to bring mussolini back into power in northeen italy under his thumb. but the more important second front was in france starting with the famous D-day invasion. that was incredibly effective, it distracted hitler enough to where stalin could finally push the germans back on the eastern front.