Answer:
There can be no doubt that they are great actors”. In other words this means that Upham realizes that they have been tricked by the girls lies.
Hope this helps:)
Upham meant that the girls were impressed by their acting ability, so they kept doing it.
Character symbolism
Not only did Upham represent the loss of innocence of war but he also symbolized the "Everyman"; the moment when he almost picks up the souvenir German helmet symbolizes how he could have fought on either side, he was a neutral soldier.
Cowards like Upham live for the sake of living and desperately cling to their finite lives. Being too afraid to die, they're too afraid to live, and as a result they shrink from any action that might put them in jeopardy. Heroes like Wade don't cling to their lives.
To learn more about Upham, refer
https://brainly.com/question/3064187
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