The Palace of Eternity Author:Bob Shaw An Ace Science Fiction Special No. 65050. From the blurb page: The planet Mnemosyne, surrounded by a lambent shell of tiny moon-fragments, was known throughout the Federation as the Poets' World. It was a beautiful planet far inside the frontiers of Man's long war with the alien Pythsyccans, and it was to this quiet world that Mack Tavernor r... more »etired when he resigned from the Federation forces. But suddenly the peace of Mnemosyne was shattered: the Federation was moving its military headquarters here. Man's forces were in retreat -- and now that Mnemosyne had become Earth's military center, it became also the target of wave after wave of alien attacks, in a continuing onslaught that could not fail to break through Man's last defenses. Tavernor was caught up in that battle, and he knew that neither he nor humanity would ever again find the peace they sought -- unless perhaps in death.« less