The statement that best summarizes the soldier's thoughts in the excerpt is : "Living in the trenches was very dangerous, with few of the comforts of home."
The soldier likely experienced the harsh reality of life on the Western Front, characterized by constant danger, discomfort, and the absence of the comforts and familiarity of home. The use of words like "dangerous" and the implication of little to occupy their time suggest that the soldier found life in the trenches to be perilous and challenging, quite different from the comforts and routine of home life. Thus, the statement that best summarizes the soldier's thoughts in the excerpt is : "Living in the trenches was very dangerous, with few of the comforts of home."