diff --git a/modules/monitoring/library/Monitoring/Command/Service/AddServiceComment.php b/modules/monitoring/library/Monitoring/Command/Service/AddServiceComment.php
new file mode 100644
index 000000000..926084bbf
--- /dev/null
+++ b/modules/monitoring/library/Monitoring/Command/Service/AddServiceComment.php
@@ -0,0 +1,34 @@
+<?php
+// {{{ICINGA_LICENSE_HEADER}}}
+// {{{ICINGA_LICENSE_HEADER}}}
+
+namespace Icinga\Module\Monitoring\Command\Service;
+
+use Icinga\Module\Monitoring\Command\Common\Comment;
+
+class AddServiceComment extends Comment
+{
+    protected $service;
+
+    /**
+     * Whether the comment is persistent
+     *
+     * Persistent comments are not lost the next time the monitoring host restarts.
+     */
+    protected $persistent;
+
+    public function __construct($service)
+    {
+        $this->serivce = (string) $service;
+    }
+
+    public function getCommand()
+    {
+        return sprintf(
+            'ADD_SVC_COMMENT;%s;%u;%s',
+            $this->host,
+            $this->persistent,
+            parent::getCommand()
+        );
+    }
+}
diff --git a/modules/monitoring/library/Monitoring/Command/Service/ScheduleServiceDowntimeCommand.php b/modules/monitoring/library/Monitoring/Command/Service/ScheduleServiceDowntimeCommand.php
new file mode 100644
index 000000000..4697be36b
--- /dev/null
+++ b/modules/monitoring/library/Monitoring/Command/Service/ScheduleServiceDowntimeCommand.php
@@ -0,0 +1,59 @@
+<?php
+// {{{ICINGA_LICENSE_HEADER}}}
+// {{{ICINGA_LICENSE_HEADER}}}
+
+namespace Icinga\Module\Monitoring\Command\Service;
+
+use Icinga\Module\Monitoring\Command\Common\ScheduleDowntimeCommand;
+use Icinga\Module\Monitoring\Object\Service;
+
+/**
+ * Schedule a service downtime on an Icinga instance
+ */
+class ScheduleServiceDowntimeCommand extends ScheduleDowntimeCommand
+{
+    /**
+     * Service to set in downtime
+     *
+     * @var Service
+     */
+    protected $service;
+
+    /**
+     * Set the service to set in downtime
+     *
+     * @param   Service $service
+     *
+     * @return  $this
+     */
+    public function setService(Service $service)
+    {
+        $this->service = $service;
+        return $this;
+    }
+
+    /**
+     * Get the service to set in downtime
+     *
+     * @return Service
+     */
+    public function getService()
+    {
+        return $this->service;
+    }
+
+    /**
+     * (non-PHPDoc)
+     * @see \Icinga\Module\Monitoring\Command\IcingaCommand::getCommandString() For the method documentation.
+     */
+    public function getCommandString()
+    {
+        return sprintf(
+            '%s;%s;%s;%s',
+            'SCHEDULE_SVC_DOWNTIME',
+            $this->service->getHostName(),
+            $this->service->getName(),
+            parent::getCommandString()
+        );
+    }
+}