Each soldier is carrying a sign, and each sign has one of your thoughts written on it.
I think that for some people this would work better if each soldier would tell you one of your thoughts aloud.
(Cue Feynman being surprised that Bethe could mentally count while speaking but not while reading, Bethe being surprised that Feynman could mentally count while reading but not while speaking, and the two of them realizing that Feynman was imagining spoken numbers and Bethe was imagining written numbers.)
I think that for some people this would work better if each soldier would tell you one of your thoughts aloud.
(Cue Feynman being surprised that Bethe could mentally count while speaking but not while reading, Bethe being surprised that Feynman could mentally count while reading but not while speaking, and the two of them realizing that Feynman was imagining spoken numbers and Bethe was imagining written numbers.)
I’ve been doing an auditory variant of this drill for several weeks where my thoughts are being played on a radio.