Final answer:
The Russian army during World War I was plagued with the inability to transport available supplies to the front lines, which greatly affected their ability to fight the war.
Step-by-step explanation:
The army that was plagued with the inability to transport available supplies to the front lines was the Russian army during World War I. This was a significant problem for the Russian army and had a detrimental impact on their ability to effectively fight the war. The lack of infrastructure and logistics in Russia made it difficult to transport supplies and support the soldiers at the front lines.
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