هذه الصوره لدفاعات بريه للحمايه من قصف المدفعيه
و كانت من اهم التكتيكات التى تم استخدامها اثناء الحرب العالميه الاولى

و الطائره فى الصوره هى لاستكشاف بدء تجمع قوات العدو للهجوم و الانذار ببدء الهجوم
بعد الانذار يتم القصف بالمدفعيه لقوات العدو المهاجمه من عمق 10 كم خلف خط التماس للجبهه ( الخندق الامامى )

و لاحظ العنوان بداخل الصوره ( فى الاسفل )
Problems facing attacking troops


Trench Warfare was one
of the most significant war tactics introduced in World War 1. The trenches
were initially made to protect themselves from the artillery barrages until it
became the most widely used tactic during that war. As the war advanced, most
troops had built trenches and dugout systems that were protected by barbed
wire. The trenches would usually be built in front of each other and the
trenches in the front would usually be used for fighting and hiding, while the
back trenches were used for resting, storage and for medical purposes. There
was also the communication trench, which was used to transport men and
equipment to different places. Trench warfare was probably one of the things
that extended the war because it took much longer to win a battle since many
were hiding.
مصدر
https://sites.google.com/site/worldwar1class6/weapons-of-world-war-1/how-did-weapons-affect-tactics-during-world-war-1